If you’re self-employed, or you have significant income the IRS never sees withholding from, this one’s for you.
When you’re a W-2 employee, your employer withholds tax from every paycheck and sends it to the IRS on your behalf. Self-employment income, rental income, and significant investment income don’t work that way, nobody is withholding anything, so the IRS expects you to send in estimated payments yourself, four times a year.
Do You Actually Need to Pay Them?
Generally, if you expect to owe $1,000 or more in tax for the year after subtracting withholding and credits, you’re expected to make estimated payments. Most self-employed individuals, freelancers, and business owners with significant non-wage income fall into this category.
The Four Deadlines
The due dates themselves don’t change from year to year, only the amount you owe does:
- April 15, covering income earned January through March
- June 15, covering income earned April and May
- September 15, covering income earned June through August
- January 15 of the following year, covering income earned September through December
If a date falls on a weekend or federal holiday, it shifts to the next business day. State estimated tax deadlines can differ from these federal dates, so it’s worth confirming both.
How to Actually Estimate the Number
The simplest reliable method is based on your prior year’s tax liability. If you pay in, through withholding and estimated payments combined, at least 100 percent of what you owed last year (110 percent if your income was higher), you generally avoid an underpayment penalty, even if you end up owing more when you file.
The alternative is estimating the current year directly: projecting your income, subtracting expenses, and calculating the tax on the result. This is more accurate but requires more work, and it’s where a lot of self-employed people either overpay out of caution or underpay and get an unpleasant surprise the following April.
What Happens If You Miss a Payment
Missing or underpaying a quarterly estimate can trigger an IRS underpayment penalty, calculated based on how much was owed and how late the payment was, even if the full balance is eventually paid by the annual filing deadline. It’s not a large penalty in most cases, but it’s an entirely avoidable cost.
The Real Value of Getting This Right
Beyond avoiding penalties, calculating quarterly estimates properly means you’re never blindsided by a large balance due in April. It turns an unpredictable annual tax bill into four manageable, expected payments throughout the year.
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